Performance problem with contest estimator that fails to create any test with 120 sec time budget

[Markoutte]

Description

Looks like there's a problem with coroutine context switching while contest estimator is working. It leads to strange problems like no tests are generated even there's enough time for it.

To Reproduce

Steps to reproduce the behavior:

1. Set this values for contest estimator: timeLimit = 120, methodFilter = "com.google.common.primitives.Shorts.*", projectFilter = listOf("guava-26.0").
2. Run contest estimator and wait for a result.

Expected behavior

Some test should be generated.

Actual behavior

No tests are generated.

Visual proofs (screenshots, logs, images)

Profiler shows many unrelated context switches.